Reflection module capable of image stabilization, camera module and electronic device

ABSTRACT

A reflection module capable of image stabilization includes a reflecting element, a rotatable holder, a fixed base, a spherical supporting structure, an auxiliary supporting structure and an image stabilizing actuator. The reflecting element having a reflecting surface for folding optical path of incident light is disposed on the rotatable holder. The fixed base is connected to the rotatable holder via an elastic element. The spherical supporting structure is disposed between the rotatable holder and the fixed base. The auxiliary supporting structure disposed on at least one of the rotatable holder and the fixed base and corresponds to the spherical supporting structure. At least part of the image stabilizing actuator is disposed on the rotatable holder for driving the rotatable holder to rotate by taking the spherical supporting structure as rotation center. The spherical supporting structure is a ball having at least three contact points with the auxiliary supporting structure.

RELATED APPLICATIONS

This application is a continuation patent application of U.S.application Ser. No. 17/060,047, filed on Sep. 30, 2020, which claimspriority to Taiwan Application 109124665, filed on Jul. 22, 2020, whichis incorporated by reference herein in its entirety.

BACKGROUND Technical Field

The present disclosure relates to a reflection module, a camera moduleand an electronic device, more particularly to a reflection modulecapable of image stabilization and a camera module applicable to anelectronic device.

Description of Related Art

With the development of semiconductor manufacturing technology, theperformance of image sensors has been improved, and the pixel sizethereof has been scaled down. Therefore, featuring high image qualitybecomes one of the indispensable features of an optical system nowadays.Furthermore, due to the rapid changes in technology, electronic devicesequipped with optical systems are trending towards multi-functionalityfor various applications, and therefore the functionality requirementsfor the optical systems have been increasing.

In recent years, there is an increasing demand for electronic devicesfeaturing compact size, but conventional optical systems, especially thetelephoto optical systems with a long focal length, are difficult tomeet both the requirements of high image quality and compactness.Conventional telephoto optical systems usually have shortcomings ofoverly long total length, poor image quality or overly large size, whichis unable to meet the requirements of the current technology trends. Toachieve compactness, the optical systems may be configured to have afolded optical axis so as to reduce the dimension of the optical systemsin a specific direction, thereby reducing the total system size.Moreover, the optical systems can be configured with anti-vibrationfunction for achieving high image quality. However, to meet theabovementioned requirements, a driving unit of complex structure isrequired to drive an optical axis folding element, which results in morecomplex structure and more weight of the optical systems.

Accordingly, how to improve the optical systems for simplifying thestructure of the lens assembly, achieving a compact size and maintaininghigh image quality so as to meet the requirement ofhigh-end-specification electronic devices is an important topic in thisfield nowadays.

SUMMARY

According to one aspect of the present disclosure, a reflection modulecapable of image stabilization includes a reflecting element, arotatable holder, a fixed base, a spherical supporting structure, anauxiliary supporting structure and an image stabilizing actuator. Thereflecting element has a reflecting surface, and the reflecting elementis disposed on the rotatable holder and configured to fold an opticalpath of incident light. The fixed base is connected to the rotatableholder via an elastic element. The spherical supporting structure isdisposed between the rotatable holder and the fixed base. The auxiliarysupporting structure is disposed on at least one of the rotatable holderand the fixed base, and the auxiliary supporting structure correspondsto the spherical supporting structure. At least a part of the imagestabilizing actuator is disposed on the rotatable holder, and the imagestabilizing actuator is configured to drive the rotatable holder torotate by taking the spherical supporting structure as a rotationcenter. In addition, the spherical supporting structure is a ball, andthe spherical supporting structure has at least three contact pointswith the auxiliary supporting structure.

According to another aspect of the present disclosure, a reflectionmodule capable of image stabilization includes a reflecting element, arotatable holder, a fixed base, a spherical supporting structure, anauxiliary supporting structure and an image stabilizing actuator. Thereflecting element has a reflecting surface, and the reflecting elementis disposed on the rotatable holder and configured to fold an opticalpath of incident light. The fixed base is connected to the rotatableholder via an elastic element. The spherical supporting structure isdisposed between the rotatable holder and the fixed base. The auxiliarysupporting structure is disposed on at least one of the rotatable holderand the fixed base, and the auxiliary supporting structure correspondsto the spherical supporting structure. At least a part of the imagestabilizing actuator is disposed on the rotatable holder, and the imagestabilizing actuator is configured to drive the rotatable holder torotate by taking the spherical supporting structure as a rotationcenter. In addition, the spherical supporting structure includes atleast one spherical surface, the auxiliary supporting structure includesat least two convex surfaces, and the at least one spherical surface hasat least two contact points with the at least two convex surfaces.

According to another aspect of the present disclosure, a reflectionmodule capable of image stabilization includes a reflecting element, arotatable holder, a fixed base, a spherical supporting structure, anauxiliary supporting structure and an image stabilizing actuator. Thereflecting element has a reflecting surface, and the reflecting elementis disposed on the rotatable holder and configured to fold an opticalpath of incident light. The fixed base is connected to the rotatableholder via an elastic element. The spherical supporting structure isdisposed between the rotatable holder and the fixed base. The auxiliarysupporting structure is disposed on at least one of the rotatable holderand the fixed base, and the auxiliary supporting structure correspondsto the spherical supporting structure. At least a part of the imagestabilizing actuator is disposed on the rotatable holder, and the imagestabilizing actuator is configured to drive the rotatable holder torotate by taking the spherical supporting structure as a rotationcenter. In addition, the spherical supporting structure includes atleast one spherical surface, and the at least one spherical surface hasat least three contact points with the auxiliary supporting structure.

According to another aspect of the present disclosure, a camera moduleincludes the aforementioned reflection module, an imaging lens moduleand an image sensor. The reflection module is disposed on an object sideof the imaging lens module, and the image sensor is disposed on an imagesurface of the imaging lens module. In addition, the reflection moduleis configured to stabilize an image signal captured by the image sensor.

According to another aspect of the present disclosure, an electronicdevice includes the aforementioned camera module.

BRIEF DESCRIPTION OF THE DRAWINGS

The disclosure can be better understood by reading the followingdetailed description of the embodiments, with reference made to theaccompanying drawings as follows:

FIG. 1 is a perspective view of a camera module according to the 1stembodiment of the present disclosure;

FIG. 2 is a partially exploded view of the camera module in FIG. 1 ;

FIG. 3 is an exploded view of some components of the camera module inFIG. 1 ;

FIG. 4 is another exploded view of some components of the camera modulein FIG. 1 ;

FIG. 5 is a cross-sectional view of the camera module along line 5-5′ inFIG. 1 ;

FIG. 6 is a perspective view of a fixed base, a spherical supportingstructure and an auxiliary supporting structure in FIG. 3 ;

FIG. 7 is an enlarged view of region A of FIG. 6 ;

FIG. 8 is a perspective view of a camera module according to the 2ndembodiment of the present disclosure;

FIG. 9 is a partially exploded view of the camera module in FIG. 8 ;

FIG. 10 is an exploded view of some components of the camera module inFIG. 8 ;

FIG. 11 is another exploded view of some components of the camera modulein FIG. 8 ;

FIG. 12 is a cross-sectional view of the camera module along line 12-12′in FIG. 8 ;

FIG. 13 is a perspective view of a fixed base, a spherical supportingstructure and an auxiliary supporting structure in FIG. 10 ;

FIG. 14 is an enlarged view of region B of FIG. 13 ;

FIG. 15 is a perspective view of a camera module according to the 3rdembodiment of the present disclosure;

FIG. 16 is a partially exploded view of the camera module in FIG. 15 ;

FIG. 17 is an exploded view of some components of the camera module inFIG. 15 ;

FIG. 18 is another exploded view of some components of the camera modulein FIG. 15 ;

FIG. 19 is a cross-sectional view of the camera module along line 19-19′in FIG. 15 ;

FIG. 20 is a perspective view of a fixed base, a spherical supportingstructure and an auxiliary supporting structure in FIG. 17 ;

FIG. 21 is an enlarged view of region C of FIG. 20 ;

FIG. 22 is a cross-sectional view of a camera module according to the4th embodiment of the present disclosure;

FIG. 23 is a perspective view of a fixed base, a spherical supportingstructure and an auxiliary supporting structure in FIG. 22 ;

FIG. 24 is an enlarged view of region D of FIG. 23 ;

FIG. 25 is a cross-sectional view of a camera module according to the5th embodiment of the present disclosure;

FIG. 26 is a cross-sectional view of a camera module according to the6th embodiment of the present disclosure;

FIG. 27 is a perspective view of a fixed base, a spherical supportingstructure and an auxiliary supporting structure in FIG. 26 ;

FIG. 28 is an enlarged view of region E of FIG. 27 ;

FIG. 29 is one perspective view of an electronic device according to the7th embodiment of the present disclosure;

FIG. 30 is another perspective view of the electronic device in FIG. 29;

FIG. 31 is an image captured by an ultra-wide-angle camera module;

FIG. 32 is an image captured by a high pixel camera module;

FIG. 33 is an image captured by a telephoto camera module; and

FIG. 34 is one perspective view of an electronic device according to the8th embodiment of the present disclosure.

DETAILED DESCRIPTION

In the following detailed description, for purposes of explanation,numerous specific details are set forth in order to provide a thoroughunderstanding of the disclosed embodiments. It will be apparent,however, that one or more embodiments may be practiced without thesespecific details. In other instances, well-known structures and devicesare schematically shown in order to simplify the drawing.

The present disclosure provides a reflection module capable of imagestabilization, and the reflection module includes a reflecting element,a rotatable holder, a fixed base, a spherical supporting structure, anauxiliary supporting structure and an image stabilizing actuator.

The reflecting element has a reflecting surface, and the reflectingelement is disposed on the rotatable holder and configured to fold anoptical path of incident light. The reflecting element can be, forexample, a prism or a reflection mirror, but the present disclosure isnot limited thereto. The fixed base is connected to the rotatable holdervia an elastic element. The spherical supporting structure is disposedbetween the rotatable holder and the fixed base. The auxiliarysupporting structure is disposed on at least one of the rotatable holderand the fixed base, and the auxiliary supporting structure correspondsto the spherical supporting structure. At least a part of the imagestabilizing actuator is disposed on the rotatable holder, and the imagestabilizing actuator is configured to drive the rotatable holder torotate by taking the spherical supporting structure as a rotationcenter, such that the reflecting element can be rotated with therotatable holder. In addition, the rotatable holder can pitch and yaw.Please refer to FIG. 34 , which shows pitch DP and yaw DY in a rotatableholder of the camera module 10 of the electronic device 8.

According to the present disclosure, the spherical supporting structureof the reflection module capable of image stabilization serves as afulcrum to provide the reflecting element with a degree of freedom inrotation, such that the requirement of image stabilization is achieved.

In one configuration, the spherical supporting structure can be a ball,and the spherical supporting structure has at least three contact pointswith the auxiliary supporting structure. Therefore, the sphericalsupporting structure and the auxiliary supporting structure contact eachother in point contact, so the contact area between the sphericalsupporting structure and the auxiliary supporting structure is small,such that it is favorable for minimizing friction therebetween when thereflecting element rotates and reducing the offset of the rotationcenter; furthermore, it is favorable for the spherical supportingstructure to rotate within a fixed position in a small rotation angle.Moreover, the ball can have two spherical surfaces respectively facingtoward the rotatable holder and the fixed base, and the two sphericalsurfaces and the auxiliary supporting structure can abut against eachother. Please refer to FIG. 5 , which shows the spherical surface 1551of the spherical supporting structure 155 abutting against the auxiliaryballs 1561 of the auxiliary supporting structure 156, and the sphericalsurface 1552 of the spherical supporting structure 155 abutting againstthe pyramidal recess 1562 of the auxiliary supporting structure 15,wherein the spherical surface 1551 faces toward the fixed base 151 andthe spherical surface 1552 faces toward the rotatable holder 153.

In one configuration, the spherical supporting structure can include atleast one spherical surface, the auxiliary supporting structure caninclude at least two convex surfaces, and the at least one sphericalsurface can have at least two contact points with the at least twoconvex surfaces. Therefore, the spherical supporting structure and theauxiliary supporting structure contacting each other with convexsurfaces is favorable for minimizing friction therebetween when thereflecting element rotates and reducing the offset of the rotationcenter; furthermore, it is favorable for preventing mechanicalinterference between the rotatable holder and the fixed base. Pleaserefer to FIG. 23 and FIG. 24 , which show the fixed base 451, thespherical supporting structure 455 and the auxiliary supportingstructure 456 in the 4th embodiment of the present disclosure, whereinthe spherical supporting structure 455 includes two balls 4553, theauxiliary supporting structure 456 includes two auxiliary balls 4561,and each of the two balls 4553 of the spherical supporting structure 455has two contact points with the auxiliary balls 4561 of the auxiliarysupporting structure 456. In addition, the at least one sphericalsurface of the spherical supporting structure can be a spherical surfaceof a ball or a spherical protrusion. Please refer to FIG. 5 and FIG. 25, which respectively show that the at least one spherical surface of thespherical supporting structure 155 is a spherical surface of a ball andthe at least one spherical surface of the spherical supporting structure555 is a spherical surface of a spherical protrusion, but the presentdisclosure is not limited the type of spherical supporting structure.

In one configuration, the spherical supporting structure can include atleast one spherical surface, and the at least one spherical surface canhave at least three contact points with the auxiliary supportingstructure. Therefore, the spherical supporting structure and theauxiliary supporting structure contact each other in point contact, sothe contact area between the spherical supporting structure and theauxiliary supporting structure is small, such that it is favorable forminimizing friction therebetween when the reflecting element rotates andreducing the offset of the rotation center; furthermore, it is favorablefor the spherical supporting structure to rotate within a fixed positionin a small rotation angle. Moreover, the at least one spherical surfaceof the spherical supporting structure can be a spherical surface of aball or a spherical protrusion, but the present disclosure is notlimited thereto.

The elastic element can provide a preload force to the rotatable holderin a direction towards the fixed base, such that the sphericalsupporting structure located between the fixed base and the rotatableholder supports the rotatable holder. Therefore, it is favorable forproviding the feasibility of the rotatable holder assembled to thespherical supporting structure. Moreover, the elastic element cansurround the spherical supporting structure. Therefore, it is favorablefor providing an evenly distributed preload force so as to prevent thespherical supporting structure from being easily damaged. In thisspecification, the term of “one element being perpendicular to anotherelement” can indicate that an angle between two elements (e.g., twolines, two surfaces, or one line and one surface) is 90 degrees orapproximately 90 degrees.

The image stabilizing actuator can include at least one driving magnetand at least one driving coil. One of the driving magnet and the drivingcoil is disposed on the rotatable holder, and the other of the drivingmagnet and the driving coil is disposed on the fixed base. Therefore, itis favorable for providing a rotation driving force to the rotatableholder. Moreover, the driving magnet and the driving coil can face eachother in a direction perpendicular to the reflecting surface. Therefore,it is favorable for forming an efficient space arrangement so as toachieve compactness. Moreover, the number of the at least one drivingmagnet can be at least two, and the number of the at least one drivingcoil can be at least two. Therefore, it is favorable for providing atleast two axial rotation driving forces. In one configuration of atleast two driving magnets, the reflection module can further include atleast two position sensing elements, and the position sensing elementsand the driving magnets can face each other in a direction perpendicularto the reflecting surface. Therefore, it is favorable for the positionsensing elements to detect a position of the rotatable holder.

According to the present disclosure, the reflection module capable ofimage stabilization can further include a printed circuit board. One ofthe printed circuit board and the driving magnet is disposed on therotatable holder, the other is disposed on the fixed base, and thedriving coil is disposed on the printed circuit board. Therefore, it isfavorable for the printed circuit board to provide driving current forthe driving coil.

When a curvature radius of the spherical supporting structure is R, anda minimum distance between the spherical supporting structure and thereflecting surface is D, the following condition can be satisfied:0.3<R/D<12. Therefore, it is favorable for obtaining a proper rotationangle and a proper ratio range of rotation stability. Moreover, thefollowing condition can also be satisfied: 0.5<R/D<10. Therefore, it isfavorable for obtaining an even better ratio range of rotationstability. Please refer to FIG. 5 , which shows a schematic view of Rand D according to the 1st embodiment of the present disclosure.

According to the present disclosure, there can be no relativedisplacement between the spherical supporting structure and the fixedbase. Therefore, it is favorable for the spherical supporting structureto be more efficiently assembled.

The auxiliary supporting structure can include a ball, a sphericalprotrusion or a pyramidal recess, and the present disclosure is notlimited thereto. In one configuration, the auxiliary supportingstructure can include at least two auxiliary balls configured forsupporting the spherical supporting structure, and the at least twoauxiliary balls have the at least two convex surfaces. Therefore, theauxiliary supporting structure contacting the spherical supportingstructure with auxiliary balls is favorable for more effectivelyreducing friction therebetween. Moreover, the auxiliary supportingstructure can also include at least three auxiliary balls. In oneconfiguration, the auxiliary supporting structure can include at leasttwo spherical protrusions configured for supporting the sphericalsupporting structure, and the at least two spherical protrusions havethe at least two convex surfaces. Therefore, the design of sphericalprotrusion is favorable for reducing manufacturing costs while achievingfriction reduction effect. Moreover, the auxiliary supporting structurecan also include at least three spherical protrusions. In oneconfiguration, the auxiliary supporting structure can include apyramidal recess, and the pyramidal recess is configured to support thespherical supporting structure. Therefore, the design of pyramidalrecess is favorable for increasing manufacturing efficiency andstructural stability of the spherical supporting structure. Moreover,the pyramidal recess can be a pyramid shape having a triangular orrectangular base and plural lateral surfaces, but the present disclosureis not limited thereto.

The spherical supporting structure can be made of ferromagneticmaterial, such that the spherical supporting structure can be attractedto the rotatable holder or the fixed base by magnetic force. Therefore,it is favorable for increasing assembling stability of the sphericalsupporting structure.

The reflecting element can be a plastic prism manufactured by injectionmolding. Therefore, it is favorable for providing the manufacturabilityof the plastic prism so as to increase the production capacity of thereflecting element. Moreover, the reflecting element can further have alight entrance surface and a light exit surface, the light entrancesurface and the reflecting surface are disposed corresponding to eachother in the light entrance direction, and the light exit surface andthe reflecting surface are disposed corresponding to each other in thelight exit direction, such that light passes through, in order from anobject side to an image side along the optical path, the light entrancesurface, the reflecting surface and the light exit surface. Moreover, atleast one of the light entrance surface and the light exit surface canhave an optical aspheric surface, such that the reflecting element canhave light refractive power. Therefore, it is favorable for providingbetter optical resolving power.

The present disclosure provides a camera module including theaforementioned reflection module capable of image stabilization, animaging lens module and an image sensor. The reflection module isdisposed on the object side of the imaging lens module, and the imagesensor is disposed on an image surface of the imaging lens module. Inaddition, the reflection module is configured to stabilize the imagesignal captured by the image sensor.

According to the present disclosure, the reflecting element can furtherhave an engagement structure surrounding the reflecting surface, and thereflecting element can be attached to the rotatable holder via theengagement structure. Therefore, it is favorable for minimizing assemblytolerance of the reflecting element and for the geometric center of thereflecting element to be aligned with the rotation center, thusmaintaining image quality. Moreover, the engagement structure isconfigured to align the geometric center of the reflecting surface withthe center of the spherical supporting structure, which can further makethe light exit surface of the reflecting element coaxially aligned withthe optical axis of the imaging lens module.

According to the present disclosure, the camera module can furtherinclude an auto focus driving unit. At least a part of the auto focusdriving unit is disposed on the imaging lens module, and the auto focusdriving unit is configured to drive the imaging lens module to move in adirection parallel to its optical axis.

According to the present disclosure, the aforementioned features andconditions can be utilized in numerous combinations so as to achievecorresponding effects.

According to the above description of the present disclosure, thefollowing specific embodiments are provided for further explanation.

1st Embodiment

Please refer to FIG. 1 to FIG. 7 , where FIG. 1 is a perspective view ofa camera module according to the 1st embodiment of the presentdisclosure, FIG. 2 is a partially exploded view of the camera module inFIG. 1 , FIG. 3 is an exploded view of some components of the cameramodule in FIG. 1 , FIG. 4 is another exploded view of some components ofthe camera module in FIG. 1 , FIG. 5 is a cross-sectional view of thecamera module along line 5-5′ in FIG. 1 , FIG. 6 is a perspective viewof a fixed base, a spherical supporting structure and an auxiliarysupporting structure in FIG. 3 , and FIG. 7 is an enlarged view ofregion A of FIG. 6 .

In this embodiment, a camera module 10 includes a casing 11, a framebody 12, an imaging lens module 13, an image sensor 14, a reflectionmodule capable of image stabilization 15, a first printed circuit board16 and an auto focus driver unit 17.

The casing 11 is disposed on the frame body 12, and the casing 11 andthe frame body 12 together form an accommodating space SP. The casing 11has an aperture 110 for light entering, and the frame body 12 has anopening 120 for light exiting.

The imaging lens module 13 is disposed in the accommodating space SP,and the imaging lens module 13 includes an imaging lens assembly 131 anda lens holder 132 for holding the imaging lens assembly 131. Inaddition, the lens holder 132 is movably disposed in the accommodatingspace SP.

The image sensor 14 is disposed on an image surface 133 of the imaginglens module 13, and the reflection module 15 is disposed in theaccommodating space SP and located on an object side of the imaging lensmodule 13. The reflection module 15 is configured to stabilize the imagesignal captured by the image sensor 14.

The reflection module 15 includes a fixed base 151, an elastic element152, a rotatable holder 153, a reflecting element 154, a sphericalsupporting structure 155, an auxiliary supporting structure 156, asecond printed circuit board 157, an image stabilizing actuator 158 andtwo position sensing elements 159.

The fixed base 151 is disposed on the frame body 12, and the rotatableholder 153 is connected to the fixed base 151 via the elastic element152.

The reflecting element 154 is a plastic prism manufactured by injectionmolding, and the reflecting element 154 is disposed on the rotatableholder 153. The reflecting element 154 and the fixed base 151 arelocated on two opposite sides of the rotatable holder 153. Thereflecting element 154 has a reflecting surface 1541, a light entrancesurface 1542 and a light exit surface 1543. The reflecting surface 1541is configured to fold an optical path of incident light. The lightentrance surface 1542 is disposed corresponding to the reflectingsurface 1541, and the light exit surface 1543 is disposed correspondingto the reflecting surface 1541. The light entrance surface 1542 facestoward the aperture 110 of the casing 11, and the light exit surface1543 faces toward the imaging lens module 13. As such, incident lightpasses through, in order from the object side to the image side alongthe optical path, the light entrance surface 1542, the reflectingsurface 1541 and the light exit surface 1543.

The spherical supporting structure 155 is a ball disposed between therotatable holder 153 and the fixed base 151. The auxiliary supportingstructure 156 includes three auxiliary balls 1561 and a pyramidal recess1562 corresponding and configured to support the spherical supportingstructure 155. The auxiliary balls 1561 are disposed in an accommodationrecess 1511 of the fixed base 151, and the pyramidal recess 1562 isrecessed from a surface of the rotatable holder 153 facing the fixedbase 151. In this embodiment, the pyramidal recess 1562 is a squarebased pyramidal recess having four lateral surfaces. Furthermore, thespherical supporting structure 155 has two spherical surfaces 1551 and1552 respectively facing the fixed base 151 and the rotatable holder153. The spherical surface 1551 facing the fixed base 151 has threecontact points with the auxiliary balls 1561, and the spherical surface1551 and the auxiliary balls 1561 abut against each other at the threecontact points. The spherical surface 1552 facing the rotatable holder153 has four contact points with the pyramidal recess 1562, and thespherical surface 1552 abuts against the pyramidal recess 1562 at thefour contact points.

In this embodiment, the three auxiliary balls 1561 of the auxiliarysupporting structure 156 include three convex surfaces, and thespherical surface 1551 of the spherical supporting structure 155 facingthe fixed base 151 has three contact points with the three convexsurfaces.

In this embodiment, the two spherical surfaces 1551 and 1552 of thespherical supporting structure 155 have a total of seven contact pointswith the auxiliary supporting structure 156.

In this embodiment, the elastic element 152 surrounds the sphericalsupporting structure 155, and the elastic element 152 provides a preloadforce to the rotatable holder 153 in a direction perpendicular to thereflecting surface 1541 and towards the fixed base 151, such that thespherical supporting structure 155 supports the rotatable holder 153.

The second printed circuit board 157 is disposed on the fixed base 151.The image stabilizing actuator 158 includes four driving magnets 1581and four driving coils 1582. The driving coils 1582 are disposed on thesecond printed circuit board 157, and the driving magnets 1581 aredisposed on the rotatable holder 153. The second printed circuit board157 can provide driving current for the driving coils 1582. The drivingcoils 1582 respectively face the driving magnets 1581 in a directionperpendicular to the reflecting surface 1541 so as to provide therotatable holder 153 with at least two axial rotation driving forces anddrive the rotatable holder 153 to rotate by taking the sphericalsupporting structure 155 as a rotation center, such that the reflectingelement 154 can be rotated with the rotatable holder 153. In addition,the rotatable holder 153 can pitch and yaw; that is, the rotatableholder 153 can rotate in pitch DP and yaw DY.

In this embodiment, the spherical supporting structure 155 is made offerromagnetic material, such that the spherical supporting structure 155can be attracted to the rotatable holder 153 by magnetic force. Inaddition, there is no relative displacement between the sphericalsupporting structure 155 and the fixed base 151.

The two position sensing elements 159 are respectively disposed in twospaces respectively surrounded by adjacent two of the driving coils1582. The position sensing elements 159 and adjacent two of the drivingmagnets 1581 respectively face each other in a direction perpendicularto the reflecting surface 1541, and the position sensing elements 159are configured to detect a position of the rotatable holder 153.

The first printed circuit board 16 is disposed on the frame body 12. Theauto focus driver unit 17 is disposed in the accommodating space SP, andat least a part of the auto focus driver unit 17 is disposed on theimaging lens module 13 so as to drive the imaging lens module 13 to movein a direction DA parallel to an optical axis OA thereof. Specifically,the auto focus driver unit 17 includes a plurality of rollable elements171, a focusing coil 172 and a focusing magnet 173. The rollableelements 171 are rollably disposed in guiding grooves 121 of the framebody 12, respectively, and clamped between the lens holder 132 and theframe body 12. The focusing coil 172 is disposed on the first printedcircuit board 16, and the focusing magnet 173 is fixed to the lensholder 132. The first printed circuit board 16 can provide drivingcurrent for the focusing coil 172. The focusing coil 172 and thefocusing magnet 173 face each other in a direction perpendicular to theoptical axis OA. The focusing coil 172 and the focusing magnet 173 areconfigured to provide a driving force to move the imaging lens module13, and the imaging lens module 13 is movable in the direction DAparallel to the optical axis OA with the collaboration of the rollableelements 171.

In this embodiment, the first printed circuit board 16 and the secondprinted circuit board 157 are two connected boards of a single printedcircuit board, and the image stabilizing actuator 158 and the auto focusdriver unit 17 are driven to work by the same printed circuit board, butthe present disclosure is not limited thereto.

When a curvature radius of the spherical supporting structure 155 is R,and a minimum distance between the spherical supporting structure 155and the reflecting surface 1541 is D, the following conditions aresatisfied: R=0.45 mm; D=0.3 mm; and R/D=1.5.

2nd Embodiment

Please refer to FIG. 8 to FIG. 14 , where FIG. 8 is a perspective viewof a camera module according to the 2nd embodiment of the presentdisclosure, FIG. 9 is a partially exploded view of the camera module inFIG. 8 , FIG. 10 is an exploded view of some components of the cameramodule in FIG. 8 , FIG. 11 is another exploded view of some componentsof the camera module in FIG. 8 , FIG. 12 is a cross-sectional view ofthe camera module along line 12-12′ in FIG. 8 , FIG. 13 is a perspectiveview of a fixed base, a spherical supporting structure and an auxiliarysupporting structure in FIG. 10 , and FIG. 14 is an enlarged view ofregion B of FIG. 13 .

In this embodiment, a camera module 20 includes a casing 21, a framebody 22, an imaging lens module 23, an image sensor 24, a reflectionmodule capable of image stabilization 25, a printed circuit board 26 andan auto focus driver unit 27.

The casing 21 is disposed on the frame body 22, and the casing 21 andthe frame body 22 together form an accommodating space SP. The casing 21has an aperture 210 for light entering, and the frame body 22 has anopening 220 for light exiting.

The imaging lens module 23 is disposed in the accommodating space SP,and the imaging lens module 23 includes an imaging lens assembly 231 anda lens holder 232 for holding the imaging lens assembly 231. Inaddition, the lens holder 232 is movably disposed in the accommodatingspace SP.

The image sensor 24 is disposed on an image surface 233 of the imaginglens module 23, and the reflection module 25 is disposed in theaccommodating space SP and located on an object side of the imaging lensmodule 23. The reflection module 25 is configured to stabilize the imagesignal captured by the image sensor 24.

The reflection module 25 includes a fixed base 251, a plurality ofelastic elements 252, a rotatable holder 253, a reflecting element 254,a spherical supporting structure 255, an auxiliary supporting structure256 and an image stabilizing actuator 258.

The fixed base 251 is disposed on the frame body 22, and the rotatableholder 253 is connected to the fixed base 251 via the elastic elements252.

The reflecting element 254 is a plastic prism manufactured by injectionmolding, and the reflecting element 254 is disposed on the rotatableholder 253. The reflecting element 254 and the fixed base 251 arelocated on two opposite sides of the rotatable holder 253. Thereflecting element 254 has a reflecting surface 2541, a light entrancesurface 2542 and a light exit surface 2543. The reflecting surface 2541is configured to fold an optical path of incident light. The lightentrance surface 2542 is disposed corresponding to the reflectingsurface 2541, and the light exit surface 2543 is disposed correspondingto the reflecting surface 2541. The light entrance surface 2542 facestoward the aperture 210 of the casing 21, and the light exit surface2543 faces toward the imaging lens module 23. As such, incident lightpasses through, in order from the object side to the image side alongthe optical path, the light entrance surface 2542, the reflectingsurface 2541 and the light exit surface 2543.

The spherical supporting structure 255 is a ball disposed between therotatable holder 253 and the fixed base 251. The auxiliary supportingstructure 256 includes a first pyramidal recess 2563 and a secondpyramidal recess 2562 corresponding and configured to support thespherical supporting structure 255. The first pyramidal recess 2563 isrecessed from a surface of the fixed base 251 facing the rotatableholder 253, and the second pyramidal recess 2562 is recessed from asurface of the rotatable holder 253 facing the fixed base 251. In thisembodiment, the first pyramidal recess 2563 is a triangular basedpyramidal recess having three lateral surfaces, and the second pyramidalrecess 2562 is a square based pyramidal recess having four lateralsurfaces. Furthermore, the spherical supporting structure 255 has twospherical surfaces 2551 and 2552 respectively facing the fixed base 251and the rotatable holder 253. The spherical surface 2551 facing thefixed base 251 has three contact points with the first pyramidal recess2563, and the spherical surface 2551 abuts against the first pyramidalrecess 2563 at the three contact points. The spherical surface 2552facing the rotatable holder 253 has four contact points with the secondpyramidal recess 2562, and the spherical surface 2552 abuts against thesecond pyramidal recess 2562 at the four contact points.

In this embodiment, the spherical surfaces 2551 and 2552 of thespherical supporting structure 255 have a total of seven contact pointswith the auxiliary supporting structure 256.

In this embodiment, the number of the elastic elements 252 is four, andthe elastic elements 252 together surround the spherical supportingstructure 255. The elastic elements 252 provides a preload force to therotatable holder 253 in a direction perpendicular to the reflectingsurface 2541 and towards the fixed base 251, such that the sphericalsupporting structure 255 supports the rotatable holder 253.

The image stabilizing actuator 258 includes four driving magnets 2581and four driving coils 2582. In this embodiment, the driving magnets2581 are disposed on the fixed base 251, and the driving coils 2582 aredisposed on the rotatable holder 253. The driving coils 2582respectively face the driving magnets 2581 in a direction perpendicularto the reflecting surface 2541 so as to provide the rotatable holder 253with at least two axial rotation driving forces and drive the rotatableholder 253 to rotate by taking the spherical supporting structure 255 asa rotation center, such that the reflecting element 254 can be rotatedwith the rotatable holder 253. In addition, the rotatable holder 253 canpitch and yaw; that is, the rotatable holder 253 can rotate in pitch DPand yaw DY.

In this embodiment, the spherical supporting structure 255 is made offerromagnetic material, such that the spherical supporting structure 255can be attracted to the rotatable holder 253 and the fixed base 251 bymagnetic force. In addition, there is no relative displacement betweenthe spherical supporting structure 255 and the fixed base 251.

The printed circuit board 26 is connected to the fixed base 251. Theauto focus driver unit 27 is disposed in the accommodating space SP, andat least a part of the auto focus driver unit 27 is disposed on theimaging lens module 23 so as to drive the imaging lens module 23 to movein a direction DA parallel to an optical axis OA thereof. Specifically,the auto focus driver unit 27 includes a plurality of rollable elements271, a focusing coil 272 and a focusing magnet 273. The rollableelements 271 are rollably disposed in guiding grooves 221 of the framebody 22, respectively, and clamped between the lens holder 232 and theframe body 22. The focusing coil 272 is disposed on the printed circuitboard 26, and the focusing magnet 273 is fixed to the lens holder 232.The printed circuit board 26 can provide driving current for thefocusing coil 272. The focusing coil 272 and the focusing magnet 273face each other in a direction perpendicular to the optical axis OA. Thefocusing coil 272 and the focusing magnet 273 are configured to providea driving force to move the imaging lens module 23, and the imaging lensmodule 23 is movable in the direction DA parallel to the optical axis OAwith the collaboration of the rollable elements 271.

When a curvature radius of the spherical supporting structure 255 is R,and a minimum distance between the spherical supporting structure 255and the reflecting surface 2541 is D, the following conditions aresatisfied: R=0.6 mm; D=0.25 mm; and R/D=2.4.

3rd Embodiment

Please refer to FIG. 15 to FIG. 21 , where FIG. 15 is a perspective viewof a camera module according to the 3rd embodiment of the presentdisclosure, FIG. 16 is a partially exploded view of the camera module inFIG. 15 , FIG. 17 is an exploded view of some components of the cameramodule in FIG. 15 , FIG. 18 is another exploded view of some componentsof the camera module in FIG. 15 , FIG. 19 is a cross-sectional view ofthe camera module along line 19-19′ in FIG. 15 , FIG. 20 is aperspective view of a fixed base, a spherical supporting structure andan auxiliary supporting structure in FIG. 17 , and FIG. 21 is anenlarged view of region C of FIG. 20 .

In this embodiment, a camera module 30 includes a casing 31, a framebody 32, an imaging lens module 33, an image sensor 34, a reflectionmodule capable of image stabilization 35, a first printed circuit board36 and an auto focus driver unit 37.

The casing 31 is disposed on the frame body 32, and the casing 31 andthe frame body 32 together form an accommodating space SP. The casing 31has an aperture 310 for light entering, and the frame body 32 has anopening 320 for light exiting.

The imaging lens module 33 is disposed in the accommodating space SP,and the imaging lens module 33 includes an imaging lens assembly 331 anda lens holder 332 for holding the imaging lens assembly 331. Inaddition, the lens holder 332 is movably disposed in the accommodatingspace SP.

The image sensor 34 is disposed on an image surface 333 of the imaginglens module 33, and the reflection module 35 is disposed in theaccommodating space SP and located on an object side of the imaging lensmodule 33. The reflection module 35 is configured to stabilize the imagesignal captured by the image sensor 34.

The reflection module 35 includes a fixed base 351, an elastic element352, a rotatable holder 353, a reflecting element 354, a sphericalsupporting structure 355, an auxiliary supporting structure 356, asecond printed circuit board 357, an image stabilizing actuator 358 andtwo position sensing elements 359.

The fixed base 351 is disposed on the frame body 32, and the rotatableholder 353 is connected to the fixed base 351 via the elastic element352.

The reflecting element 354 is a plastic prism manufactured by injectionmolding, and the reflecting element 354 is disposed on the rotatableholder 353. The reflecting element 354 and the fixed base 351 arelocated on two opposite sides of the rotatable holder 353. Thereflecting element 354 has a reflecting surface 3541, a light entrancesurface 3542 and a light exit surface 3543. The reflecting surface 3541is configured to fold an optical path of incident light. The lightentrance surface 3542 is disposed corresponding to the reflectingsurface 3541, and the light exit surface 3543 is disposed correspondingto the reflecting surface 3541. The light entrance surface 3542 facestoward the aperture 310 of the casing 31, and the light exit surface3543 faces toward the imaging lens module 33. As such, incident lightpasses through, in order from the object side to the image side alongthe optical path, the light entrance surface 3542, the reflectingsurface 3541 and the light exit surface 3543. In this embodiment, eachof the light entrance surface 3542 and the light exit surface 3543 hasan optical aspheric surface, such that the reflecting element 354 haslight refractive power capable of providing better optical resolvingpower.

The spherical supporting structure 355 is a ball disposed between therotatable holder 353 and the fixed base 351. The auxiliary supportingstructure 356 includes three spherical protrusions 3564 and a pyramidalrecess 3562 corresponding and configured to support the sphericalsupporting structure 355. The spherical protrusions 3564 are formed on asurface of the fixed base 351 facing the rotatable holder 353, and thepyramidal recess 3562 is recessed from a surface of the rotatable holder353 facing the fixed base 351. In this embodiment, the pyramidal recess3562 is a square based pyramidal recess having four lateral surfaces.Furthermore, the spherical supporting structure 355 has two sphericalsurfaces 3551 and 3552 respectively facing the fixed base 351 and therotatable holder 353. The spherical surface 3551 facing the fixed base351 has three contact points with the spherical protrusions 3564, andthe spherical surface 3551 and the spherical protrusions 3564 abutagainst each other at the three contact points. The spherical surface3552 facing the rotatable holder 353 has four contact points with thepyramidal recess 3562, and the spherical surface 3552 abuts against thepyramidal recess 3562 at the four contact points.

In this embodiment, the three spherical protrusions 3564 of theauxiliary supporting structure 356 include three convex surfaces, andthe spherical surface 3551 of the spherical supporting structure 355facing the fixed base 351 has three contact points with the three convexsurfaces.

In this embodiment, the two spherical surfaces 3551 and 3552 of thespherical supporting structure 355 have a total of seven contact pointswith the auxiliary supporting structure 356.

In this embodiment, the elastic element 352 surrounds the sphericalsupporting structure 355, and the elastic element 352 provides a preloadforce to the rotatable holder 353 in a direction perpendicular to thereflecting surface 3541 and towards the fixed base 351, such that thespherical supporting structure 355 supports the rotatable holder 353.

The second printed circuit board 357 is disposed on the fixed base 351.The image stabilizing actuator 358 includes four driving magnets 3581and four driving coils 3582. The driving magnets 3581 are disposed onthe rotatable holder 353, and the driving coils 3582 are disposed on thesecond printed circuit board 357. The second printed circuit board 357can provide driving current for the driving coils 3582. The drivingcoils 3582 respectively face the driving magnets 3581 in a directionperpendicular to the reflecting surface 3541 so as to provide therotatable holder 353 with at least two axial rotation driving forces anddrive the rotatable holder 353 to rotate by taking the sphericalsupporting structure 355 as a rotation center, such that the reflectingelement 354 can be rotated with the rotatable holder 353. In addition,the rotatable holder 353 can pitch and yaw; that is, the rotatableholder 353 can rotate in pitch DP and yaw DY.

In this embodiment, the spherical supporting structure 355 is made offerromagnetic material, such that the spherical supporting structure 355can be attracted to the rotatable holder 353 by magnetic force. Inaddition, there is no relative displacement between the sphericalsupporting structure 355 and the fixed base 351.

The two position sensing elements 359 are respectively disposed in twospaces respectively surrounded by adjacent two of the driving coils3582. The position sensing elements 359 and adjacent two of the drivingmagnets 3581 respectively face each other in a direction perpendicularto the reflecting surface 3541, and the position sensing elements 359are configured to detect a position of the rotatable holder 353.

The first printed circuit board 36 is disposed on the frame body 32. Theauto focus driver unit 37 is disposed in the accommodating space SP, andat least a part of the auto focus driver unit 37 is disposed on theimaging lens module 33 so as to drive the imaging lens module 33 to movein a direction DA parallel to an optical axis OA thereof. Specifically,the auto focus driver unit 37 includes a plurality of rollable elements371, a focusing coil 372 and a focusing magnet 373. The rollableelements 371 are rollably disposed in guiding grooves 321 of the framebody 32, respectively, and clamped between the lens holder 332 and theframe body 32. The focusing coil 372 is disposed on the first printedcircuit board 36, and the focusing magnet 373 is fixed to the lensholder 332. The first printed circuit board 36 can provide drivingcurrent for the focusing coil 372. The focusing coil 372 and thefocusing magnet 373 face each other in a direction perpendicular to theoptical axis OA. The focusing coil 372 and the focusing magnet 373 areconfigured to provide a driving force to move the imaging lens module33, and the imaging lens module 33 is movable in the direction DAparallel to the optical axis OA with the collaboration of the rollableelements 371.

In this embodiment, the reflecting element 354 further has an engagementstructure 3544 surrounding a truncated conical surface of the reflectingsurface 3541. The reflecting element 354 is attached to the rotatableholder 353 by the engagement structure 3544 engaged with an engagementrecess (not numbered) of the rotatable holder 353 so as to align thegeometric center of the reflecting surface 3541 with the center of thespherical supporting structure 355, which can further make the lightexit surface 3543 of the reflecting element 354 coaxially aligned withthe optical axis OA of the imaging lens module 33.

In this embodiment, the first printed circuit board 36 and the secondprinted circuit board 357 are two connected boards of a single printedcircuit board, and the image stabilizing actuator 358 and the auto focusdriver unit 37 are driven to work by the same printed circuit board, butthe present disclosure is not limited thereto.

When a curvature radius of the spherical supporting structure 355 is R,and a minimum distance between the spherical supporting structure 355and the reflecting surface 3541 is D, the following conditions aresatisfied: R=0.45 mm; D=0.3 mm; and R/D=1.5.

4th Embodiment

Please refer to FIG. 22 to FIG. 24 , where FIG. 22 is a cross-sectionalview of a camera module according to the 4th embodiment of the presentdisclosure, FIG. 23 is a perspective view of a fixed base, a sphericalsupporting structure and an auxiliary supporting structure in FIG. 22 ,and FIG. 24 is an enlarged view of region D of FIG. 23 .

In this embodiment, a camera module 40 is provided, and the cameramodule 40 has a configuration similar to that of the camera module 10disclosed in the 1st embodiment. The camera module 40 and the cameramodule 10 are different from each other in features of sphericalsupporting structure and auxiliary supporting structure.

In this embodiment, a spherical supporting structure 455 includes twoballs 4553 disposed between a rotatable holder 453 and a fixed base 451.An auxiliary supporting structure 456 includes a pyramidal recess 4563and two auxiliary balls 4561 corresponding and configured to support thespherical supporting structure 455. The pyramidal recess 4563 isrecessed from a surface of the fixed base 451 facing the rotatableholder 453, and the auxiliary balls 4561 are disposed in anaccommodation recess 4531 of the rotatable holder 453. Each of the balls4553 of the spherical supporting structure 455 has two sphericalsurfaces (not numbered) respectively facing the fixed base 451 and therotatable holder 453. Each spherical surface of the balls 4553 facingthe fixed base 451 has three contact points with the pyramidal recess4563, and each spherical surface of the balls 4553 facing the fixed base451 abuts against the pyramidal recess 4563 at the three contact points.Each spherical surface of the balls 4553 facing the rotatable holder 453has two contact points with the auxiliary balls 4561, and each sphericalsurface of the balls 4553 facing the rotatable holder 453 abuts againstthe auxiliary balls 4561 at the two contact points.

In this embodiment, the two auxiliary balls 4561 of the auxiliarysupporting structure 456 include two convex surfaces, and each sphericalsurface of the balls 4553 of the spherical supporting structure 455facing the rotatable holder 453 has two contact points with the twoconvex surfaces. Furthermore, the spherical supporting structure 455 hasa total of ten contact points with the auxiliary supporting structure456.

In this embodiment, the rotatable holder 453 can pitch and yaw.Furthermore, the spherical supporting structure 455 is made offerromagnetic material, such that the spherical supporting structure 455can be attracted to the rotatable holder 453 by magnetic force. Inaddition, there is no relative displacement between the sphericalsupporting structure 455 and the fixed base 451.

When a curvature radius of each of the balls 4553 of the sphericalsupporting structure 455 is R, and a minimum distance between thespherical supporting structure 455 and the reflecting surface 4541 is D,the following conditions are satisfied: R=0.4 mm; D=0.79 mm; andR/D=0.51.

5th Embodiment

Please refer to FIG. 25 , which is a cross-sectional view of a cameramodule according to the 5th embodiment of the present disclosure.

In this embodiment, a camera module 50 is provided, and the cameramodule 50 has a configuration similar to that of the camera module 10disclosed in the 1st embodiment. The camera module 50 and the cameramodule 10 are different from each other in features of sphericalsupporting structure and auxiliary supporting structure.

In this embodiment, a spherical supporting structure 555 is a sphericalprotrusion formed on a surface of a rotatable holder 553 facing a fixedbase 551. An auxiliary supporting structure 556 includes a pyramidalrecess 5563 corresponding and configured to support the sphericalsupporting structure 555. The pyramidal recess 5563 is recessed from asurface of the fixed base 551 facing the rotatable holder 553. Thepyramidal recess 5563 is a square based pyramidal recess having fourlateral surfaces. Furthermore, the spherical supporting structure 555includes a spherical surface 5551 facing the fixed base 551, and thespherical surface 5551 has four contact points with the pyramidal recess5563, and the spherical surface 5551 and the pyramidal recess 5563 abutagainst each other at the four contact points.

In this embodiment, the rotatable holder 553 can pitch and yaw. Inaddition, there is no relative displacement between the sphericalsupporting structure 555 and the fixed base 551.

In this embodiment, the spherical supporting structure 555 and therotatable holder 553 are made in one piece, but the present disclosureis not limited thereto. Furthermore, in this embodiment, the sphericalsupporting structure 555 is formed on the rotatable holder 553, and thepyramidal recess 5563 of the auxiliary supporting structure 556 isformed on the fixed base 551, but the present disclosure is not limitedthereto. In other embodiments, the protrusion-type spherical supportingstructure is formed on the fixed base, the pyramidal recess of theauxiliary supporting structure is recessed from the rotatable holder,and the spherical supporting structure and the fixed base can be made inone piece.

When a curvature radius of the spherical supporting structure 555 is R,and a minimum distance between the spherical supporting structure 555and the reflecting surface 5541 is D, the following conditions aresatisfied: R=0.8 mm; D=0.62 mm; and R/D=1.29.

6th Embodiment

Please refer to FIG. 26 to FIG. 28 , where FIG. 26 is a cross-sectionalview of a camera module according to the 6th embodiment of the presentdisclosure, FIG. 27 is a perspective view of a fixed base, a sphericalsupporting structure and an auxiliary supporting structure in FIG. 26 ,and FIG. 28 is an enlarged view of region E of FIG. 27 .

In this embodiment, a camera module 60 is provided, and the cameramodule 60 has a configuration similar to that of the camera module 10disclosed in the 1st embodiment. The camera module 60 and the cameramodule 10 are different from each other in features of reflectingelement, spherical supporting structure and auxiliary supportingstructure.

In this embodiment, a reflecting element 654 is a reflection mirrordisposed on a rotatable holder 653, and the reflecting element 654 and afixed base 651 are disposed on two opposite sides of the rotatableholder 653. The reflecting element 654 has a reflecting surface 6541configured to fold an optical path of incident light.

A spherical supporting structure 655 is a ball disposed between therotatable holder 653 and the fixed base 651. An auxiliary supportingstructure 656 includes four auxiliary balls 6561 and a pyramidal recess6562 corresponding and configured to support the spherical supportingstructure 655. The auxiliary balls 6561 are disposed in an accommodationrecess 6511 of the fixed base 651, and the pyramidal recess 6562 isrecessed from a surface of the rotatable holder 653 facing the fixedbase 651. The pyramidal recess 6562 is a square based pyramidal recesshaving four lateral surfaces. Furthermore, the spherical supportingstructure 655 has two spherical surfaces 6551 and 6552 respectivelyfacing the fixed base 651 and the rotatable holder 653. The sphericalsurface 6551 facing the fixed base 651 has four contact points with theauxiliary balls 6561, and the spherical surface 6551 and the auxiliaryballs 6561 abut against each other at the four contact points. Thespherical surface 6552 facing the rotatable holder 653 has four contactpoints with the pyramidal recess 6562, and the spherical surface 6552abuts against the pyramidal recess 6562 at the four contact points.

In this embodiment, the four auxiliary balls 6561 of the auxiliarysupporting structure 656 include four convex surfaces, and the sphericalsurface 6551 of the spherical supporting structure 655 facing the fixedbase 651 has four contact points with the four convex surfaces. Inaddition, the spherical supporting structure 655 has a total of eightcontact points with the auxiliary supporting structure 656.

In this embodiment, the rotatable holder 653 can pitch and yaw.Furthermore, the spherical supporting structure 655 is made offerromagnetic material, such that the spherical supporting structure 655can be attracted to the rotatable holder 653 by magnetic force. Inaddition, there is no relative displacement between the sphericalsupporting structure 655 and the fixed base 651.

When a curvature radius of the spherical supporting structure 655 is R,and a minimum distance between the spherical supporting structure 655and the reflecting surface 6541 is D, the following conditions aresatisfied: R=0.45 mm; D=0.45 mm; and R/D=1.0.

7th Embodiment

Please refer to FIG. 29 and FIG. 30 , where FIG. 29 is one perspectiveview of an electronic device according to the 7th embodiment of thepresent disclosure, and FIG. 30 is another perspective view of theelectronic device in FIG. 29 .

In this embodiment, an electronic device 7 is a smartphone including aplurality of camera modules, a flash module 71, a focus assist module72, an image signal processor 73, a display unit (a user interface) 74and an image software processor.

The camera modules include an ultra-wide-angle camera module 70 a, ahigh pixel camera module 70 b and a telephoto camera module 70 c. Thecamera module disclosed in the 1st embodiment is taken as the telephotocamera module 70 c, but the present disclosure is not limited thereto.Camera modules disclosed in other embodiments can also be taken as thetelephoto camera module 70 c.

The image captured by the ultra-wide-angle camera module 70 a enjoys afeature of multiple imaged objects. FIG. 31 is an image captured by theultra-wide-angle camera module 70 a.

The image captured by the high pixel camera module 70 b enjoys a featureof high resolution and less distortion, and the high pixel camera module70 b can capture part of the image in FIG. 31 . FIG. 32 is an imagecaptured by the high pixel camera module 70 b.

The image captured by the telephoto camera module 70 c enjoys a featureof high optical magnification, and the telephoto camera module 70 c cancapture part of the image in FIG. 32 . FIG. 33 is an image captured bythe telephoto camera module 70 c. The maximum field of view (FOV) of thecamera module corresponds to the field of view in FIG. 33 .

When a user captures images of an object, the light rays converge in theultra-wide-angle camera module 70 a, the high pixel camera module 70 bor the telephoto camera module 70 c to generate an image(s), and theflash module 71 is activated for light supplement. The focus assistmodule 72 detects the object distance of the imaged object to achievefast auto focusing. The image signal processor 73 is configured tooptimize the captured image to improve image quality and providedzooming function. The light beam emitted from the focus assist module 72can be either conventional infrared or laser. The display unit 74 can bea touch screen or a physical button. The user is able to interact withthe display unit 74 and the image software processor having multiplefunctions to capture images and complete image processing. The imageprocessed by the image software processor can be displayed on thedisplay unit 74.

8th Embodiment

Please refer to FIG. 34 , which is one perspective view of an electronicdevice according to the 8th embodiment of the present disclosure.

In this embodiment, an electronic device 8 is a smartphone including thecamera module 10 disclosed in the 1st embodiment, a camera module 80 a,a camera module 80 b, a camera module 80 c, a camera module 80 d, acamera module 80 e, a camera module 80 f, a camera module 80 g, a cameramodule 80 h, a flash module 81, an image signal processor, a displayunit and an image software processor (not shown). The camera module 10,the camera module 80 a, the camera module 80 b, the camera module 80 c,the camera module 80 d, the camera module 80 e, the camera module 80 f,the camera module 80 g and the camera module 80 h are disposed on thesame side of the electronic device 8, while the display unit is disposedon the opposite side of the electronic device 8.

The camera module 10 is a telephoto camera module, the camera module 80a is a telephoto camera module, the camera module 80 b is a telephotocamera module, the camera module 80 c is a telephoto camera module, thecamera module 80 d is a wide-angle camera module, the camera module 80 eis a wide-angle camera module, the camera module 80 f is anultra-wide-angle camera module, the camera module 80 g is anultra-wide-angle camera module, and the camera module 80 h is a ToF(time of flight) camera module. In this embodiment, the camera module10, the camera module 80 a, the camera module 80 b, the camera module 80c, the camera module 80 d, the camera module 80 e, the camera module 80f and the camera module 80 g have different fields of view, such thatthe electronic device 8 can have various magnification ratios so as tomeet the requirement of optical zoom functionality. In addition, thecamera module 10 and the camera module 80 a are telephoto camera moduleshaving a light-folding element configuration. In addition, the cameramodule 80 h can determine depth information of the imaged object. Inthis embodiment, the electronic device 8 includes multiple cameramodules 10, 80 a, 80 b, 80 c, 80 d, 80 e, 80 f, 80 g, and 80 h, but thepresent disclosure is not limited to the number and arrangement ofcamera module. When a user captures images of an object, the light raysconverge in the camera modules 10, 80 a, 80 b, 80 c, 80 d, 80 e, 80 f,80 g or 80 h to generate an image(s), and the flash module 81 isactivated for light supplement. Further, the subsequent processes areperformed in a manner similar to the abovementioned embodiments, so thedetails in this regard will not be provided again.

The smartphones in the embodiments are only exemplary for showing thecamera modules 10, 20, 30, 40, 50, 60 of the present disclosureinstalled in an electronic device, and the present disclosure is notlimited thereto. The camera modules 10, 20, 30, 40, 50, 60 can beoptionally applied to optical systems with a movable focus. Furthermore,the camera modules 10, 20, 30, 40, 50, 60 feature good capability inaberration corrections and high image quality, and can be applied to 3D(three-dimensional) image capturing applications, in products such asdigital cameras, mobile devices, digital tablets, smart televisions,network surveillance devices, dashboard cameras, vehicle backup cameras,multi-camera devices, image recognition systems, motion sensing inputdevices, wearable devices and other electronic imaging devices.

The foregoing description, for the purpose of explanation, has beendescribed with reference to specific embodiments. It is to be noted thatthe present disclosure shows different data of the differentembodiments; however, the data of the different embodiments are obtainedfrom experiments. The embodiments were chosen and described in order tobest explain the principles of the disclosure and its practicalapplications, to thereby enable others skilled in the art to bestutilize the disclosure and various embodiments with variousmodifications as are suited to the particular use contemplated. Theembodiments depicted above and the appended drawings are exemplary andare not intended to be exhaustive or to limit the scope of the presentdisclosure to the precise forms disclosed. Many modifications andvariations are possible in view of the above teachings.

What is claimed is:
 1. A reflection module capable of imagestabilization, comprising: a reflecting element, having a reflectingsurface, wherein the reflecting element is configured to fold an opticalpath of incident light; a rotatable holder, wherein the reflectingelement is disposed on the rotatable holder; a fixed base, connected tothe rotatable holder via an elastic element; a spherical supportingstructure, disposed between the rotatable holder and the fixed base; anauxiliary supporting structure, disposed on at least one of therotatable holder and the fixed base, wherein the auxiliary supportingstructure corresponds to the spherical supporting structure; and animage stabilizing actuator, wherein at least a part of the imagestabilizing actuator is disposed on the rotatable holder, and the imagestabilizing actuator is configured to drive the rotatable holder torotate by taking the spherical supporting structure as a rotationcenter; wherein the spherical supporting structure comprises two balls,and the spherical supporting structure has at least three contact pointswith the auxiliary supporting structure.
 2. The reflection module ofclaim 1, wherein the elastic element provides a preload force to therotatable holder, and the preload force is in a direction towards thefixed base, such that the spherical supporting structure located betweenthe fixed base and the rotatable holder supports the rotatable holder.3. The reflection module of claim 2, wherein the elastic elementsurrounds the spherical supporting structure.
 4. The reflection moduleof claim 1, wherein the image stabilizing actuator comprises at leastone driving magnet and at least one driving coil, one of the at leastone driving magnet and the at least one driving coil is disposed on therotatable holder, and other of the at least one driving magnet and theat least one driving coil is disposed on the fixed base.
 5. Thereflection module of claim 4, wherein the at least one driving magnetand the at least one driving coil face each other in a directionperpendicular to the reflecting surface.
 6. The reflection module ofclaim 4, wherein a number of the at least one driving magnet is at leasttwo, a number of the at least one driving coil is at least two, and theat least two driving magnets respectively face the at least two drivingcoils in a direction perpendicular to the reflecting surface.
 7. Thereflection module of claim 1, wherein a curvature radius of each of thetwo balls of the spherical supporting structure is R, a minimum distancebetween the spherical supporting structure and the reflecting surface isD, and the following condition is satisfied: 0.5 < R/D <
 10. 8. Thereflection module of claim 1, wherein there is no relative displacementbetween the spherical supporting structure and the fixed base.
 9. Thereflection module of claim 8, wherein the auxiliary supporting structurecomprises at least two auxiliary balls, and the at least two auxiliaryballs are configured to support the spherical supporting structure. 10.The reflection module of claim 8, wherein the auxiliary supportingstructure comprises at least two spherical protrusions, and the at leasttwo spherical protrusions are configured to support the sphericalsupporting structure.
 11. The reflection module of claim 8, wherein theauxiliary supporting structure comprises a pyramidal recess, and thepyramidal recess is configured to support the spherical supportingstructure.
 12. The reflection module of claim 1, wherein the sphericalsupporting structure is made of ferromagnetic material.
 13. Thereflection module of claim 1, wherein the reflecting element is aplastic prism manufactured by injection molding, the reflecting elementhas a light entrance surface and a light exit surface, the lightentrance surface and the reflecting surface are disposed correspondingto each other, and the light exit surface and the reflecting surface aredisposed corresponding to each other.
 14. The reflection module of claim13, wherein at least one of the light entrance surface and the lightexit surface has an optical aspheric surface.
 15. The reflection moduleof claim 13, wherein the reflecting element has an engagement structure,the engagement structure surrounds the reflecting surface, and thereflecting element is attached to the rotatable holder via theengagement structure.
 16. A camera module, comprising: the reflectionmodule of claim 1; an imaging lens module, wherein the reflection moduleis disposed on an object side of the imaging lens module; and an imagesensor, disposed on an image surface of the imaging lens module; whereinthe reflection module is configured to stabilize an image signalcaptured by the image sensor.
 17. An electronic device, comprising: thecamera module of claim
 16. 18. A reflection module capable of imagestabilization, comprising: a reflecting element, having a reflectingsurface, wherein the reflecting element is configured to fold an opticalpath of incident light; a rotatable holder, wherein the reflectingelement is disposed on the rotatable holder; a fixed base, connected tothe rotatable holder via an elastic element; a spherical supportingstructure, disposed between the rotatable holder and the fixed base; anauxiliary supporting structure, disposed on at least one of therotatable holder and the fixed base, wherein the auxiliary supportingstructure corresponds to the spherical supporting structure; and animage stabilizing actuator, wherein at least a part of the imagestabilizing actuator is disposed on the rotatable holder, and the imagestabilizing actuator is configured to drive the rotatable holder torotate by taking the spherical supporting structure as a rotationcenter; wherein the spherical supporting structure comprises at leasttwo spherical surfaces, the auxiliary supporting structure comprises twoconvex surfaces, and one of the at least two spherical surfaces has twocontact points with the two convex surfaces; wherein the elastic elementprovides a preload force to the rotatable holder, and the preload forceis in a direction towards the fixed base, such that the sphericalsupporting structure located between the fixed base and the rotatableholder supports the rotatable holder.
 19. The reflection module of claim18, wherein a curvature radius of the spherical supporting structure isR, a minimum distance between the spherical supporting structure and thereflecting surface is D, and the following condition is satisfied:0.5 < R/D <
 10. 20. The reflection module of claim 18, wherein theelastic element surrounds the spherical supporting structure.
 21. Thereflection module of claim 18, wherein the auxiliary supportingstructure comprises two auxiliary balls, the two auxiliary balls havethe two convex surfaces, and the two auxiliary balls are configured tosupport the spherical supporting structure.
 22. The reflection module ofclaim 18, wherein the auxiliary supporting structure comprises at leasttwo spherical protrusions, the at least two spherical protrusions havethe two convex surfaces, and the at least two spherical protrusions areconfigured to support the spherical supporting structure.
 23. Thereflection module of claim 18, wherein the image stabilizing actuatorcomprises at least one driving magnet and at least one driving coil, oneof the at least one driving magnet and the at least one driving coil isdisposed on the rotatable holder, and other of the at least one drivingmagnet and the at least one driving coil is disposed on the fixed base.24. The reflection module of claim 23, wherein the at least one drivingmagnet and the at least one driving coil face each other in a directionperpendicular to the reflecting surface.
 25. A reflection module capableof image stabilization, comprising: a reflecting element, having areflecting surface, wherein the reflecting element is configured to foldan optical path of incident light; a rotatable holder, wherein thereflecting element is disposed on the rotatable holder; a fixed base,connected to the rotatable holder via an elastic element; a sphericalsupporting structure, disposed between the rotatable holder and thefixed base; an auxiliary supporting structure, disposed on at least oneof the rotatable holder and the fixed base, wherein the auxiliarysupporting structure corresponds to the spherical supporting structure;and an image stabilizing actuator, wherein at least a part of the imagestabilizing actuator is disposed on the rotatable holder, and the imagestabilizing actuator is configured to drive the rotatable holder torotate by taking the spherical supporting structure as a rotationcenter; wherein the spherical supporting structure comprises twospherical surfaces, and the two spherical surfaces have at least threecontact points with the auxiliary supporting structure.
 26. Thereflection module of claim 25, wherein a curvature radius of thespherical supporting structure is R, a minimum distance between thespherical supporting structure and the reflecting surface is D, and thefollowing condition is satisfied: 0.5 < R/D <
 10. 27. The reflectionmodule of claim 25, wherein the elastic element provides a preload forceto the rotatable holder, and the preload force is in a direction towardsthe fixed base, such that the spherical supporting structure locatedbetween the fixed base and the rotatable holder supports the rotatableholder.
 28. The reflection module of claim 27, wherein the elasticelement surrounds the spherical supporting structure.